The speed of the boat along the river is 20.4 km / h, and against the current 18.2 km / h.

The speed of the boat along the river is 20.4 km / h, and against the current 18.2 km / h. What is the boat’s own speed? What is the speed of the river?

The solution of the problem:
1. To solve the problem, let us find the speed of the river if we know the speed of the boat along the river and against the river.
(20.4 – 18.2) / 2 = 1.1 kilometers.
2. Find out what the boat’s own speed is equal to.
20.4 – 1.1 = 19.3 kilometers.
Answer: The speed of the river is one kilometer and one hundred meters per hour, and the boat’s own speed is nineteen kilometers and three hundred meters per hour.